ISO 12944-8 (2017)

Prévia do material em texto

© ISO 2017
Paints and varnishes — Corrosion 
protection of steel structures by 
protective paint systems —
Part 8: 
Development of specifications for new 
work and maintenance
Peintures et vernis — Anticorrosion des structures en acier par 
systèmes de peinture —
Partie 8: Développement de spécifications pour les travaux neufs et de 
maintenance
INTERNATIONAL 
STANDARD
ISO
12944-8
Second edition
2017-11
Reference number
ISO 12944-8:2017(E)
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ISO 12944-8:2017(E)
 
ii © ISO 2017 – All rights reserved
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior 
wri ission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of 
the
ght office
ndonnet 8 • CP 401
eva, Switzerland
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ISO 12944-8:2017(E)
 
Foreword ........................................................................................................................................................................................................................................iv
Introduction ..................................................................................................................................................................................................................................v
1 Scope ................................................................................................................................................................................................................................. 1
2 Normative references ...................................................................................................................................................................................... 1
3 Terms and definitions ..................................................................................................................................................................................... 1
4 How to develop a specification for new work or maintenance ............................................................................ 3
5 Contents of a specification .......................................................................................................................................................................... 4
5.1 Supply ............................................................................................................................................................................................................. 4
Annex A (informative) Basic information for inclusion in a protective paint system 
specification for new work and maintenance .....................................................................................................................12
Annex B (informative) Reference areas ..........................................................................................................................................................14
Annex C (informative) Flow chart for planning new work..........................................................................................................17
Annex D (informative) Flow chart for planning maintenance work .................................................................................19
Annex E (informative) Classification of environments — Checklist (derived from ISO 12944‑2).....20
Annex F (informative) Recommended form for a protective paint system specification — 
New work ...................................................................................................................................................................................................................22
Annex G (informative) Recommended form for a protective paint system 
specification — Maintenance ...............................................................................................................................................................23
Annex H (informative) Recommended form for a report on paint work progress and 
application conditions .................................................................................................................................................................................25
Annex I (informative) Recommended form for final report on corrosion protection work ....................27
Annex J (informative) Recommended form for a detailed inspection report on the condition 
of an existing protective paint system, including the assessment of the need 
for maintenance .................................................................................................................................................................................................30
Bibliography .............................................................................................................................................................................................................................34
rights reserved iii
Contents Page
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ISO 12944-8:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards 
bodies (ISO member bodies). The work of preparing International Standards is normally carried out 
through ISO technical committees. Each member body interested in a subject for which a technical 
committee has been established has the right to be represented on that committee. International 
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. 
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of 
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are 
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the 
different types of ISO documents should be noted. This document was drafted in accordance with the 
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of 
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of 
any patent rights identified during the development of the document will be in the Introduction and/or 
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not 
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and 
expressions related to conformity assessment, as well as information about ISO's adherence to the 
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following 
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee 
SC 14, Protective paint systems for steel structures.
This second edition cancels and replaces the first edition (ISO 12944-8:1998), which has been 
technically revised.
The main changes compared to the previous edition are as follows:
— the normative references have been updated;
— the terms and definitions have been updated;
— water soluble contaminants and dust have been added in Table 1 as particular constraints with 
respect to surfaces and surface preparation;
— Annex E has been updated with regard to corrosivity classes;
— Annex I has been updated with regard to surface preparations;
— the bibliography has been updated;
— the text hasbeen editorially revised.
A list of all parts in the ISO 12944 series can be found on the ISO website.
 
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ISO 12944-8:2017(E)
Introduction
Unprotected steel in the atmosphere, in water and in soil is subjected to corrosion that can lead to 
damage. Therefore, to avoid corrosion damage, steel structures are normally protected to withstand 
the corrosion stresses to which they will be subjected during the service life required of the structure.
There are different ways of protecting steel structures from corrosion. ISO 12944 (all parts) deals with 
protection by paint systems and covers, in the various parts, all features that are important in achieving 
adequate corrosion protection. Additional or other measures are possible but require particular 
agreement between the interested parties.
In order to ensure effective corrosion protection of steel structures, owners of such structures, planners, 
consultants, companies carrying out corrosion protection work, inspectors of protective coatings 
and manufacturers of coating materials need to have at their disposal state-of-the-art information in 
concise form on corrosion protection by paint systems. It is vital that such information is as complete as 
possible, unambiguous and easily understandable to avoid difficulties and misunderstandings between 
the parties concerned with the practical implementation of protection work.
ISO 12944 (all parts) is intended to give this information in the form of a series of instructions. It is 
written for those who have some technical knowledge. It is also assumed that the user of ISO 12944 (all 
parts) is familiar with other relevant International Standards, in particular those dealing with surface 
preparation.
Although ISO 12944 (all parts) does not deal with financial and contractual questions, attention is 
drawn to the fact that, because of the considerable implications of inadequate corrosion protection, 
non-compliance with requirements and recommendations given in ISO 12944 (all parts) can result in 
serious financial consequences.
ISO 12944-1 defines the overall scope of all parts of ISO 12944. It gives some basic terms and definitions 
and a general introduction to the other parts of ISO 12944. Furthermore, it includes a general statement 
on health, safety and environmental protection, and guidelines for using ISO 12944 for a given project.
This document is intended as an aid when a corrosion protection specification is to be drawn up.
 
© ISO 2017 – All rights reserved v
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Paints and varnishes — Corrosion protection of steel 
structures by protective paint systems —
Part 8: 
Development of specifications for new work and 
maintenance
1 Scope
This document covers the development of specifications for corrosion protection of steel structures 
using protective paint systems. It relates to new work and maintenance in the workshop or on site 
and is also applicable to the corrosion protection of individual components. This document covers 
the corrosion protection of steel structures exposed to different corrosion stresses by environments 
such as indoors, open-air and immersion in water or burial in soil, as well as special stresses, due for 
example, to medium or high temperatures. The need for different durability ranges is considered.
Steel surfaces that have been hot-dip-galvanized, metal-sprayed, zinc-electroplated or sherardized, and 
previously painted steel surfaces, are also covered by this document.
In this document, reference areas for assessing the quality of the corrosion protection work and the 
performance of the protective paint systems used are dealt with. This document provides detailed 
flow charts for planning new work and maintenance, which are taken into account when writing a 
specification.
This document can also be used as a guide if extreme corrosion stresses or high temperatures occur, 
or if the protective paint systems are to be used on other substrates, such as non-ferrous metals or 
concrete, to define suitable specifications.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content 
constitutes requirements of this document. For dated references, only the edition cited applies. For 
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 12944-1, Paints and varnishes — Corrosion protection of steel structures by protective paint systems — 
Part 1: General introduction
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12944-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
INTERNATIONAL STANDARD ISO 12944-8:2017(E)
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ISO 12944-8:2017(E)
3.1
constituent element
part of a structure that is exposed to a particular environment and which will therefore require a 
specific protective paint system specification (3.8.2)
Note 1 to entry: For example, a storage tank will have more than one constituent element as it comprises internal 
and external surfaces and possibly also support steelwork.
3.2
dry film thickness
DFT
thickness of a coating remaining on the surface when the coating has hardened
Note 1 to entry: For details, see ISO 12944-5:—1), 5.4.
3.3
durability
expected life of a protective paint system to the first major maintenance (3.5) painting
Note 1 to entry: For further important information on durability and durability ranges, see ISO 12944-1.
3.4
inspector
anyone responsible for ensuring conformity with one or more of the individual specifications (3.8)
3.5
maintenance
sum of all measures, as covered by ISO 12944 (all parts), which ensure that the steel structure is 
protected from corrosion
Note 1 to entry: Maintenance includes, but is not limited to, paint work. Such paint work can be patch painting 
(repair of degradated spots/areas of the coating system), patch painting followed by overpainting of the 
structure, or total repainting.
3.6
nominal dry film thickness
NDFT
dry  film thickness (3.2) specified for each coat or for the whole paint system to achieve the required 
durability (3.3)
Note 1 to entry: For details, see ISO 12944-5: —1), 5.4.
3.7
project
whole of the work for which a specification (3.8) is being developed and which can include one or more 
structures
3.8
specification
technical document describing all the requirements to be observed when a steel structure is to 
be protected against corrosion by using protective coating systems and which consists of several 
individual specifications
Note 1 to entry: Individual specifications, i.e. project  specification (3.8.1), protective  paint  system  specification 
(3.8.2), paint work specification (3.8.3), inspection and assessment specification (3.8.4), are defined.
3.8.1
project specification
specification (3.8) that describes the project (3.7) and the requirements relating specifically to it
1) Under preparation.
 
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ISO 12944-8:2017(E)
3.8.2
protective paint system specification
specification (3.8) that describes the preparation of the surfaceof the structure and the protective 
coating system(s) for the structure, in conformity with the project specification (3.8.1)
3.8.3
paint work specification
specification (3.8) that describes the way the coating work is to be carried out, in conformity with 
the project specification (3.8.1) and the protective paint system specification (3.8.2), as well as with the 
inspection and assessment specification (3.8.4)
3.8.4
inspection and assessment specification
specification (3.8) that describes how inspection and assessment are to be carried out
3.9
specifier
anyone responsible for the development of a specification (3.8)
3.10
sample area
area on which the properties of a newly applied coating are tested
3.11
touch-up
application of coating material on a small area
4 How to develop a specification for new work or maintenance
It is recommended that the specifier considers the information given in Clause 5 and establishes which 
specification(s) apply/applies to the project or constituent element to be protected. Then, the specifier 
should check in the respective table, item by item, which of the items listed are to be taken into account 
in the specification. The various items are supported by detailed information given in the "Remarks" 
column in Tables 1 to 4 and in Annexes A to J.
When writing a specification for new work or maintenance, it is important to choose the most suitable 
protective paint system. Prior to refurbishment, it can be helpful to create sample areas, e.g. to assess 
the coating suitability and appearance. To achieve this, all relevant parameters shall be taken into 
consideration, for example:
— required durability;
— environmental conditions and special stresses;
— surface preparation;
— different generic types of paint;
— number and types of coats [priming coat(s), intermediate coat(s) and top coat(s)];
— methods of application and application requirements;
— place of application (shop or site);
— scaffolding requirements;
— requirements regarding (future) maintenance (if any);
— health and safety requirements;
— environmental protection requirements.
 
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ISO 12944-8:2017(E)
These parameters are described in detail in ISO 12944-1 to ISO 12944-7 and ISO 12944-9. In this 
document, only information which is considered to be particularly important to the specifier is given.
In the drafting of a specification for maintenance work on a structure or constituent element, a decision 
needs to be made to choose between
— repair,
— partial renewal, or
— complete renewal.
When complete renewal has been decided on, the specification should preferably be developed in 
accordance with a specification for new work, e.g. using the form given in Annex G.
In Annex D, it is shown how to define the work for different types of maintenance work. The exact 
definition of which kind of work is necessary shall be decided in dependence of the structure. Test areas 
can be useful to find a sufficient solution.
At an early stage in the drafting of a project specification, a final decision will have to be taken by the 
specifier on essential planning parameters, such as protection of slip-resistant connections using high-
tensile bolts, the inside surfaces of hollow sections and other hidden steel surfaces (see ISO 12944-3 for 
details of design).
Exclusions, i.e. items not to be painted, shall be indicated in the specification(s).
The choice of protective paint systems shall be based on practical experience and/or the results of 
laboratory performance tests, particularly when new coating technology is involved. The protective 
paint systems shall be tested for compatibility with existing coatings on previously coated surfaces.
The specifier shall further take into account regulations and/or requirements relating to environmental 
protection, health and safety, and working conditions in the shop or on site.
5 Contents of a specification
5.1 Supply
The items which are preferably to be covered by a specification are listed in Tables 1 to 4, under the 
following headings:
— contents of a project specification (see Table 1);
— contents of a protective paint system specification (see Table 2);
— contents of a paint work specification (see Table 3);
— contents of an inspection and assessment specification (see Table 4).
For small structures, or those whose protection is not subject to any particular requirements, only 
certain items shall be taken into account.
NOTE Each table contains sufficient information to enable the specifier to write a specification for any 
one of the subjects listed above without having to make frequent references to the other tables. This has led to 
some expressions being repeated in each of the tables: for example, under 1.1, 2.1, 3.1 and 4.1, the items “name 
of project”, “name of customer” and “name of specifier” are repeated. In practice, such information is to be given 
only once in the complete specification.
 
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ISO 12944-8:2017(E)
Table 1 — Contents of a project specification
No. Main item/sub-itema Remarks
1.1 GENERAL INFORMATION
1.1.1 Name of project 
1.1.2 Name of customer 
1.1.3 Location(s) of structure(s) 
1.1.4 Name of specifier State organization and person.
1.1.5 Environmental conditions at location(s) of 
structure(s)
See Annex E and ISO 12944-2.
1.1.6 References to standards and regulations 
1.2 TYPE OF PROJECT For definitions of project, structure and constit-
uent element, see Clause 3.
1.2.1 New construction without protection 
1.2.2 New construction blast-cleaned and coated 
1.2.3 Touch-up and final paint work 
1.2.4 Maintenance See Annexes H, I and J.
1.2.5 New construction and maintenance combined 
1.2.6 Items not to be coated 
1.3 DESCRIPTION OF EACH CONSTITUENT 
ELEMENT
Each structure should preferably be divided into 
constituent elements on the basis of the protec-
tive paint system(s) to be used and the corro-
sion stresses associated with each constituent 
element.
1.3.1 Substrate(s) Metallic coatings, e.g. zinc, are part of the coat-
ing system.
1.3.2 Existing paint system and its condition See ISO 12944-5.
1.3.3 Areas (m2) 
1.4 DESCRIPTION OF ENVIRONMENT OF EACH 
CONSTITUENT ELEMENT
Descriptions are given in ISO 12944-2. See also 
Annex E.
1.4.1 Atmospheric environmental conditions See E.1.1.
1.4.2 Immersed categories See E.2.
1.4.3 Special situations See E.4.1.
1.4.4 Special stresses See E.4.2.
1.5 DURABILITY
1.5.1 Durability range See ISO 12944-1.
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
 
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ISO 12944-8:2017(E)
No. Main item/sub-itema Remarks
1.6 PROTECTIVE PAINT SYSTEMS — 
PARTICULAR CONSTRAINTS WITH 
RESPECT TO SURFACES AND SURFACE 
PREPARATION
Details of types of surface, surface preparation 
grades, surface profiles and surface preparation 
methods can be found in ISO 12944-4. In the 
specification, the required surface preparation 
grade shall be given for each individual protec-
tive paint system to be used.
1.6.1 Types of surface and surface preparation 
grade(s) for new work and maintenance
Besides the surface preparation grade, the 
specification shall give details of the surface 
preparation work required. See also Annexes G 
and H and Table 3.
1.6.2 Surface preparation method(s) See ISO 12944-4.
1.6.3 Water-soluble contaminants See ISO 8502-6 and ISO 8502-9.
1.6.4 Dust See ISO 8502-3.
1.7 PROTECTIVE PAINT SYSTEMS — PARTICULAR CONSTRAINTS WITH RESPECT TO PAINT 
MATERIALS
1.7.1 Choice of the coating system 
1.7.1.1 Protective paint systemsfor initial protection 
and complete renewal
See ISO 12944-5, ISO 12944-7, ISO 12944-9 and 
Annexes G and H, and Table 2.
1.7.1.2 Protective paint systems for repair and partial 
renewal
Systems according to ISO 12944-5 and 
ISO 12944-9.
Corrosion protection may be assessed using 
sample areas.
1.7.2 Particular constraints relating to coatings and 
paint work
For example: compatibility with existing 
coatings, edge protection (see ISO 12944-5 and 
ISO 12944-7), non-skid coatings or spraying 
with airless rather than conventional equipment.
1.7.3 Special requirements regarding, in particular:
— health and safety
— environmental protection
For example: low level of harmful substances, 
protection against pollution by such substances, 
waste disposal.
1.8 PROTECTIVE PAINT SYSTEMS — PARTICULAR CONSTRAINTS WITH RESPECT TO PAINT 
WORK
1.8.1 Location of paint work: workshop and/or on site See ISO 12944-7.
1.8.2 Conditions for paint work For example: timetable and climatic conditions 
(to be taken into account by the operator). See 
also ISO 12944-7.
1.8.3 Method of application of protective paint sys-
tems for new, touch-up and maintenance work
See ISO 12944-7. Any particular requirements 
shall be given. Special methods of application 
shall be described in full detail.
1.8.4 Constraints relating to paint work For example: compatibility with existing 
coatings, masking of areas to be welded (see 
ISO 12944-7), edge protection (see ISO 12944-5 
and ISO 12944-7).
1.8.5 Special requirements regarding, in particular:
— health and safety
— environmental protection
For example: low level of harmful substances, 
protection against pollution by such substances, 
waste disposal.
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
 
Table 1 (continued)
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ISO 12944-8:2017(E)
No. Main item/sub-itema Remarks
1.9 PROPERTIES (OTHER THAN ANTI-CORROSIVE) OF PROTECTIVE PAINT SYSTEMS
1.9.1 Colours Colour should preferably be based on colour 
designations such as those of the Munsell Colour 
System, RAL 840-HR, NF X 08-002, BS 4800, 
NS 4054, UNE 48103, JPMA Standard Paint 
Colours or NCS, in accordance with the relevant 
national standard where applicable. The colours 
of all coats of a paint system should normally be 
different from each other. The last but one coat 
should normally be of such a colour that the top 
coat fully hides it.
1.9.2 Stability of top-coat colour See also No. 1.4.4, this table.
1.10 QUALITY MANAGEMENT
1.10.1 Quality control, quality assurance and records 
1.11 INSPECTION AND ASSESSMENT See Table 4.
1.11.1 Inspection by internal bodies 
1.11.2 Inspection by external (e.g. independent) bodies 
1.11.3 Names of external inspection bodies and/or the 
inspectors themselves
Such bodies and/or inspectors, if any, shall be 
nominated by the specifier.
The level of qualification of the inspector should 
be specified.
1.11.4 Methods of inspection The specifier shall indicate the methods and 
types of instrument required, using Internation-
al Standards, wherever possible. The specifier 
shall also indicate the recording and reporting 
procedures to be used.
1.11.5 Inspection steps Details of inspection steps, if any, shall be de-
scribed.
1.12 REFERENCE AREAS
1.12.1 Records The specifier should normally specify for which 
constituent element(s) of each structure of the 
project reference areas are to be provided. If 
not specified, any of the interested parties may 
also request the preparation of reference areas 
(conditions to be agreed). Reference areas shall 
normally be prepared in the presence of all 
parties concerned, e.g. owner, paint manufac-
turer, sub-contractors and main contractor. See 
ISO 12944-7 and Annex B.
1.12.2 Responsibility for records
1.12.3 Location and number of reference area(s)
1.12.4 Size of reference area(s)
1.12.5 Marking of reference area(s)
1.13 HEALTH AND SAFETY; ENVIRONMENTAL PROTECTION
1.13.1 Applicable regulations The regulations applicable on site shall be ob-
served. If appropriate, these shall be described 
by the specifier. See ISO 12944-7.
1.14 SPECIAL REQUIREMENTS
1.14.1 Procedure for dealing with deviations from the 
specification, limits of inspection and assessment
Shall be specified by the specifier.
1.14.2 Special factors related to execution and supervi-
sion of paint work
Shall be specified by the specifier.
1.14.3 Any further requirements Requirements concerning transport, loading and 
unloading, and storage shall be indicated, if any.
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
 
Table 1 (continued)
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ISO 12944-8:2017(E)
No. Main item/sub-itema Remarks
1.15 MEETINGS
1.15.1 Pre-bid meeting and kick-off meeting Details of pre-bid and kick-off meetings should 
preferably be specified. The purpose of the kick-
off meeting is to settle any remaining questions 
concerning paint work (see Annexes C and D) 
and whether previously coated surfaces are 
acceptable.
1.16 DOCUMENTATION Types of document required shall be specified, 
as appropriate, by the specifier.
1.16.1 Documents on surface preparation and pro-
tective paint system(s)/paints comprising 
information on
— paint work
— constraints, see main items 1.7 to 1.8, this 
table
— properties, see main item 1.9, this table
— inspection and assessment
 
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
Table 2 — Contents of a protective paint system specification
No. Main item/sub-itema Remarks
2.1 GENERAL INFORMATION
2.1.1 Name of project 
2.1.2 Name of customer 
2.1.3 Name of specifier State organization and person.
2.2 STEEL DRESSING
2.2.1 Edges See ISO 12944-3.
2.2.2 Steel surface imperfections 
2.2.3 Irregularities in welds See ISO 8501-3.
2.2.4 Welding areas for welding on site See ISO 12944-3 and ISO 12944-7.
2.3 SURFACE PREPARATION
2.3.1 Surface preparation grade(s), including prepara-
tion of remaining coatings
See ISO 12944-4. Further details on cleaning, 
degreasing and contaminants, and the condition 
of any existing coating shall be provided.
2.3.2 Surface profile (roughness) See ISO 8503-1 to ISO 8503-4.
2.3.3 Welding areas for welding on site See ISO 12944-3 and ISO 12944-7.
2.4 PROTECTIVE PAINT SYSTEM(S)
2.4.1 Description of protective paint system(s) in 
accordance with Annexes G and H
See Annex A and ISO 12944-5, ISO 12944-6, 
ISO 12944-7 and ISO 12944-9.
2.4.2 Edge protection 
2.4.3 Overcoating interval(s) Requirements regarding overcoating intervals 
are to be indicated. See also manufacturers' tech-
nical data sheets and instructions for application.
2.4.4 Technical data sheets and safety data sheets for 
paint materials
These data sheets are prepared and provided by 
paint manufacturers.
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
 
Table 1 (continued)
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ISO 12944-8:2017(E)
No. Main item/sub-itema Remarks
2.4.5 Performance test results Results of laboratory tests in accordance with 
ISO 12944-6, ISO 12944-9 and/or other suitabil-
ity tests, e.g. sample areas, are to be provided or 
accepted by the coatings manufacturer.
2.5 PAINT MANUFACTURER
2.5.1 Qualification of paint manufacturer Procedures should preferably be specified.
2.5.2 List of paint manufacturers A listof qualified suppliers of the paint materials 
specified is desirable. If products from other 
suppliers are to be used, the selection procedure 
should normally be described.
2.6 QUALITY CONTROL AND QUALITY 
ASSURANCE FOR PAINT MATERIALS
See Table 4.
2.6.1 Inspection, quality of inspection and verification 
2.6.2 Inspection by internal bodies 
2.6.3 Inspection by external (e.g. independent) bodies 
2.6.4 Inspectors' names 
2.6.5 Methods of inspection Methods of inspection to be carried out by the 
manufacturer shall be described, if any.
2.6.6 Inspection steps Details of inspection steps, if any, shall be de-
scribed.
2.6.7 Conformity certificate(s) Requirements for conformity certificates for 
paint materials shall be specified, if appropriate.
2.6.8 Reference area(s) or test specimens
See Table 1, No. 1.12.
2.6.8.1 Records
2.6.8.2 Responsibility for records
2.6.8.3 Location and number of reference area(s)
2.6.8.4 Size of reference area(s)
2.6.8.5 Marking of reference area(s)
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
Table 3 — Contents of a paint work specification
No. Main item/sub-itema Remarks
3.1 GENERAL INFORMATION
3.1.1 Name of project 
3.1.2 Name of customer 
3.1.3 Name of specifier State organization and person.
3.2 PAINT CONTRACTOR/APPLICATOR
3.2.1 List of paint contractors/applicators A list of qualified paint contractors/applicators 
is desirable. If other companies are to do the 
work, the company-selection procedure should 
normally be described.
3.2.2 Qualification of paint contractors/applicators The requirements shall be specified.
3.2.3 Qualification of personnel The personnel may, for instance, be internal 
inspectors, supervisors, workmen. See also 
ISO 12944-7:2017, 4.1.
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
 
Table 2 (continued)
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ISO 12944-8:2017(E)
No. Main item/sub-itema Remarks
3.3 PLANNING OF NEW AND MAINTENANCE WORK
3.3.1 Steps in planning See Annexes C and D.
3.4 EXECUTION OF NEW AND MAINTENANCE WORK
3.4.1 Tasks of paint contractors/applicators and pro-
cedures for paint work
The individual tasks and procedures shall be 
described (including the erection of scaffolding, 
illumination, the use of machinery and equip-
ment, health and safety and environmental 
protection). See also ISO 12944-3, ISO 12944-4 
and ISO 12944-7.
3.4.2 Environment-tolerable waste disposal 
3.5 QUALITY CONTROL AND QUALITY 
ASSURANCE
See Table 4.
3.5.1 Inspection, quality of inspection and verification 
3.5.2 Inspection by internal bodies 
3.5.3 Inspection by external (e.g. independent) bodies 
3.5.4 Inspectors' names 
3.5.5 Methods of inspection The methods of inspection shall be described.
3.5.6 Inspection steps Details of inspection steps, if any, shall be de-
scribed.
3.5.7 Reference area(s)
See Table 1, No. 1.12.
3.5.7.1 Records
3.5.7.2 Responsibility for records
3.5.7.3 Location and number of reference area(s)
3.5.7.4 Size of reference area(s)
3.5.7.5 Marking of reference area(s)
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
Table 4 — Contents of an inspection and assessment specification
No. Main item/sub-itema Remarks
4.1 GENERAL INFORMATION
4.1.1 Name of project 
4.1.2 Name of customer 
4.1.3 Name of specifier State organization and person.
4.2 INSPECTORS
4.2.1 List of inspectors and inspection bodies A list of names and addresses of inspectors such 
as third-party inspectors and clients' inspectors, 
together with their tasks and responsibilities, 
shall be provided. The list may be limited to one 
name only.
4.2.2 Methods of inspection See Table 1, No. 1.11.4.
4.2.3 Procedure for dealing with deviations from the 
specifications
See Table 1, Nos. 1.14.1 and 1.14.2.
4.3 QUALITY CONTROL AND QUALITY ASSURANCE
4.3.1 Qualification of inspectors 
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
 
Table 3 (continued)
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ISO 12944-8:2017(E)
No. Main item/sub-itema Remarks
4.3.2 Inspection, quality of inspection and recording of 
inspection results
See Nos. 4.3.7 and 4.3.8, this table.
4.3.3 Inspection by internal bodies 
4.3.4 Inspection by external (e.g. independent) bodies 
4.3.5 Quality assurance and inspection plan The inspection plan shall describe the inspection 
tasks and the extent of the inspection work.
The extent of inspection shall be in reasonable 
relation to the size and type of project, structure or 
constituent element. The severity of the corrosion 
stresses involved shall also be taken into account.
4.3.6 Inspection steps Details of inspection steps, if any, shall be described.
4.3.7 Reference area(s) and responsibility for keeping 
records on reference area(s)
See Table 1, No. 1.12, Annex B and Nos. 4.3.2 and 
4.3.8, this table.
4.3.8 Requirements concerning quality control and 
quality assurance records
Quality control and quality assurance records 
should normally be restricted to surface prepa-
ration work, general information on the paint 
materials used, application of the paint materials, 
environmental conditions during work and results 
of measurements. Persons shall be nominated to 
keep such records for the various parts of the work. 
See Annexes I and J.
4.3.9 Distribution of records The sender and the recipients of records shall 
be stated.
a These items are recommended. If, however, a particular sub-item is included in the specification, any instructions in 
the remarks column shall be followed.
 
Table 4 (continued)
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ISO 12944-8:2017(E)
Annex A 
(informative) 
 
Basic information for inclusion in a protective paint system 
specification for new work and maintenance
PROJECT 
 Name of project 
 Owner of project 
 Location of project 
 Name of specifier 
CONSTITUENT ELEMENT: 
CORROSIVITY CATEGORY: 
PROTECTIVE PAINT SYSTEM: 
ISO 12944-5 PAINT SYSTEM No. (if applicable): 
REQUIRED DURABILITY: 
WORKSHOP APPLICATON 
SURFACE PREPARATION, IF PREFABRICATION PRIMER IS TO BE USED: 
PREFABRICATION PRIMER, IF ANY: 
SURFACE PREPARATION: 
PRIMING COAT(S) (TYPE AND NOMINAL DRY FILM THICKNESS): 
 1st coat µm
 2nd coat µm
EDGE PROTECTION 
STRIPE COAT(S), IF ANY: µm
INTERMEDIATE COAT(S) (TYPE AND NOMINAL DRY FILM THICKNESS): 
 1st coat µm
 2nd coat µm
 3rd coat µm
TOP COAT(S) (TYPE AND NOMINAL DRY FILM THICKNESS): 
 1st coat µm
 
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ISO 12944-8:2017(E)
 2nd coat µm
 3rd coat µm
TOTAL NOMINAL DRY FILM THICKNESS: µm
SITE APPLICATION 
SURFACE PREPARATION: 
PRIMING COAT(S) (TYPE AND NOMINAL DRY FILM THICKNESS): 
 1st coat COMPLETE/TOUCH-UP µm
 2nd coat COMPLETE/TOUCH-UP µm
INTERMEDIATE COAT(S) (TYPE AND NOMINAL DRY FILM THICKNESS): 
 1st coat COMPLETE/TOUCH-UP µm
 2nd coat COMPLETE/TOUCH-UP µm
 3rd coat COMPLETE/TOUCH-UP µm
TOP COAT(S) (TYPE AND NOMINAL DRY FILM THICKNESS): 
 1st coat COMPLETE/TOUCH-UP µm
 2nd coat COMPLETE/TOUCH-UP µm
 3rd coat COMPLETE/TOUCH-UP µm
TOTAL NOMINAL DRY FILM THICKNESS: µm
COLOURS (in accordance with Table 1, No. 1.9.1): 
 
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ISO 12944-8:2017(E)
Annex B 
(informative) 
 
Reference areas
Reference areas are suitable areas on the structure used
— to establish a minimum acceptable standard for the work,
— to check that data provided by a manufacturer or contractor are correct, and
— to enable the performance of the coating to be assessed at any time after completion.
Thus, reference areas become the standard against which subsequent surface preparation and paint 
work is judged. They are also a means of deciding whether the performance of the specified protective 
paint system is as expected.
Reference areas should preferably be prepared on each important constituent element of the structure. 
This is achieved by the painting contractor preparing the surface and applying each of the specified 
coats of paint under supervision by an inspector approved by the specifier, the paint manufacturer 
and/or the owner, or as otherwise specified. Each step in the preparation and painting shall be approved 
as complying with the specification before the next step is undertaken.
Different environments are likely to exist at different locations on the structure once the steel structure 
is operational. The reference areas shall therefore be placed so as to take this into account, e.g. by 
siting them in both the potentially most severe and the mildest environments. Reference areas should 
normally include welds and other joints, edges, corners and any other areas of the structure which are 
considered to present a high risk of corrosion.
Reference areas shall be clearly and permanently marked by the contractor/applicator. Detailed 
records of the reference areas shall be kept and steps taken to ensure they are not destroyed, e.g. by 
overpainting.
A recommended form for a report on reference areas is provided in Table B.1.
For further details, see ISO 12944-7.
 
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ISO 12944-8:2017(E)
Table B.1 — Recommended form for a report on reference areas
Report on reference areas for corrosion protection work
Owner:
Specifier:
Project:
Constituent element:
 Company Person responsible
Surface preparation: 
Paint work: 
Supplier of paint materials: 
Reference areaa
Location and marking:
Size in m2
Original condition of the surface:
 Uncoated surface (information in accordance with ISO 8501-1)
 Rust grade  A  B  C  D
 Supplementary information:
 
 
Zinc-coated steel surface, if any: 
  Hot-dip-galvanized surface
  Thermally sprayed surface
  Electroplated surface
 Zinc corrosion (e.g. white rust)  YES  NO
 Supplementary information:
 
Painted surface
 Type(s) of coat (including thickness and age, if known):
 Degree of blistering in accordance with ISO 4628-2:
 Degree of rusting in accordance with ISO 4628-3:
 Degree of cracking in accordance with ISO 4628-4:
 Degree of flaking in accordance with ISO 4628-5:
 Supplementary information:
 
Surface preparation
Preparation grade (ISO 8501-1/ISO 8501-2/ISO 8501-4)
  Sa 1  Sa 2  Sa 2 1/2  Sa 3  PSa 2 
 
  PSa 2 
1/2
 PSa 3  St 2  St 3  PSt 2 
 
  PSt 3  PMa  Wa 1  Wa 2  Wa 2 1/2 
Other information relating to preparation method and grade achievedb,c:
 
Remarks:
 
 
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ISO 12944-8:2017(E)
Report on reference areas for corrosion protection work
 1 2 3 4 5 6
 Pre-fabrica-
tion primer
Priming 
coat
d d d Top coat
Paint material
— Manufacturer
— Brand name
— Batch and/or produc-
tion no.
 
Coloure 
Application methodf 
Air temperature, °C 
Relative humidity, % 
Surface temperature, °C 
Dew point, °C 
Weather conditions (brief 
description)
 
Thinner (type and amount) 
of paint material, if added
 
Average film thickness, µmg
— wet
instrument used
— dry
instrument used
 
Other measurements, if 
specifiedg
 
Date
Time
 
Location of paint workh 
Company name(s)
Signature(s) of person(s) 
responsible
 
 
a Fill in a new sheet for each reference area.
b For example, for preparation grades St 2 and St 3, whether hand tools or power tools were used.
c Level of flash rust immediately prior to application.
d Possible further operations, e.g. application of further coats, edge protection.
e See Table 1, No. 1.9.
f See ISO 12944-7:2017, 6.3.
g List the individual measurements on a separate sheet.
h For example, steel mill, workshop or on site.
 
Table B.1 (continued)
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ISO 12944-8:2017(E)
Annex C 
(informative) 
 
Flow chart for planning new work
 
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ISO 12944-8:2017(E)
 
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ISO 12944-8:2017(E)
Annex D 
(informative) 
 
Flow chart for planning maintenance work
 
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ISO 12944-8:2017(E)
Annex E 
(informative) 
 
Classification of environments — Checklist (derived from 
ISO 12944-2)
E.1 Environment categories and associated types of atmosphere
E.1.1 Atmospheric corrosivity categories
a) C1 Very low
b) C2 Low
c) C3 Medium
d) C4 High
e) C5 Very high
f) CX Extreme
E.1.2 Types of atmosphere
a) Rural
b) Urban
c) Industrial
d) Marine
e) Offshore
E.2 Categories for water and soil
a) Im1 Fresh water
b) Im2 Sea or brackish water
c) Im3 Soil
d) Im4 Sea or brackish water with cathodic protection
E.3 Climatic conditions
a) Extremely cold
b) Cold
c) Cold temperate
d) Warm temperate
e) Warm dry
 
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ISO 12944-8:2017(E)
f) Mild warm dry
g) Extremely warm dry
h) Warm damp
i) Warm damp, constant
E.4 Special cases
E.4.1 Special situations
a) Corrosion inside buildings
b) Corrosion in box members and hollow components
E.4.2 Special stresses
a) Chemical stresses
b) Mechanical stresses
c) Stresses due to condensation
d) Stresses due to medium or high temperatures
e) Increased corrosion due to combinations of stresses
f) Stresses due to exposure to strong UV radiation
For details, see ISO 12944-2.
 
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ISO 12944-8:2017(E)
Annex F 
(informative) 
 
Recommended form for a protective paint system specification — 
New work
This form is to be filled in for each constituent element of the structure.
Project:
Name of owner:
Project:
Location:
Protective paint system:
ISO 12944-5 paint system no.:
Constituent element: Environment:
Drawing no./area: Required durability:
Position no.: Sheet no.:
 
SHOP APPLICATION
 SURFACE PREPARATION GRADE:
 TYPE OF PREFABRICATION PRIMER (if used):
 Paint manufacturer: Area: .................... m2
PROTECTIVE PAINT SYSTEM Nominal dry film 
thickness
Overcoating interval Drying time 
at .......°CMinimum Maximum
μm h h h
1st coat
2nd coat
3rd coat
4th coat
……………………….............
……………………….............
………………………………..
………………………………..
 
TOTAL 
NOTE For touch-up of damage, see “site application” below.
 
SITE APPLICATION
 SURFACE PREPARATION GRADE:
 Touch-up:
 Complete:Paint manufacturer: Area: .................... m2
PROTECTIVE PAINT SYSTEM Nominal dry film 
thickness
Overcoating interval Drying time 
at .......°CMinimum Maximum
μm h h h
1st coat
2nd coat
Complete:
1st coat
2nd coat
3rd coat
4th coat
……………………….............
………………………............
 
……………………………….
…………………………………
…………………………………
…………………………………
 
TOTAL 
 
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ISO 12944-8:2017(E)
Annex G 
(informative) 
 
Recommended form for a protective paint system specification — 
Maintenance
This form is to be filled in for each constituent element of the structure.
Project:
Name of owner:
Project: 
Location:
Protective paint system:
ISO 12944-5 paint system no.:
Constituent element: Environment:
Drawing no./area: Required durability:
Position no.: Sheet no.:
 
TOUCH-UP:
SURFACE PREPARATION GRADE (e.g. according to ISO 8501-2 and/or ISO 8501-4):
Paint manufacturer: Area: .................... m2
CONDITION OF SUBSTRATE
(See Annex J, C: ASSESSMENT OF CONDI-
TION OF PROTECTIVE PAINT SYSTEM)
 
PROTECTIVE PAINT SYSTEM Nominal dry film 
thickness
Overcoating interval Drying time 
at .......°CMinimum Maximum
μm h h h
1st coat
2nd coat
3rd coat
4th coat
……………………….............
……………………….............
……………………………….
……………………………….
 
TOTAL 
 
 
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ISO 12944-8:2017(E)
SITE APPLICATION
 SURFACE PREPARATION GRADE (e.g. according to ISO 8501-1, ISO 8501-2 and/or ISO 8501–4):
 Touch-up:
 Complete:
Paint manufacturer: Area: .................... m2
PROTECTIVE PAINT SYSTEM Nominal dry film 
thickness
Overcoating interval Drying time 
at .......°CMinimum Maximum
μm h h h
Touch-up:
1st coat
2nd coat
Complete:
1st coat
2nd coat
3rd coat
4th coat
 
……………………….............
……………………….............
 
………………………………..
……………………………….
……………………………….
……………………………….
 
TOTAL 
 
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ISO 12944-8:2017(E)
Annex H 
(informative) 
 
Recommended form for a report on paint work progress and 
application conditions
 
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ISO 12944-8:2017(E)
 
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26 © ISO 2017 – All rights reserved--``,````,,,``````,``,,``,`,`,`-`-`,,`,,`,`,,`---
 
ISO 12944-8:2017(E)
Annex I 
(informative) 
 
Recommended form for final report on corrosion protection work
Name of structure: Project no.: Drawing no.:
Protective paint system:
ISO 12944-5 paint system no. (if applicable):
1st coat 2nd coat 3rd coat 4th coat 5th coat
Paint work contractor: 
 
 
 
New work Maintenance
Rust grade of steel surface (ISO 8501-1)  Degree of rusting Ri ….. (ISO 4628-3)
 A  B  C  D  Not known
 Milling imperfections found  Washed, give details
 Sharp edges and burns removed 
 Welding residues, including weld spatter, not removed 
Specified surface preparation grade (e.g. according to ISO 8501-1, ISO 8501-2 or ISO 8501-4):
Blast-cleaning  Sa 2  Sa 2 1/2  Sa 3
  P Sa 2  P Sa 2 1/2  P Sa 3
Hand and power-tool cleaning  St 2  St 3 
  P St 2  P St 3 
Machine abrading  PMa 
Water jetting  Wa 1  Wa 2  Wa 2 1/2
Flash rust grade  Light  Medium  Heavy
Contaminants (e.g. according to ISO 8502-3, ISO 8502-6, ISO 8502-9)
Water-soluble contaminants Specified value: 
Dust (ISO 8502-3) Size:  0  1  2  3  4 5
Rating:  1  2  3  4  5
Specified surface profile (ISO 8503-1):
Comparator G  Fine  Medium  Coarse  
Comparator S  Fine  Medium  Coarse  
 
© ISO 2017 – All rights reserved 27
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ISO 12944-8:2017(E)
 Details of 
surface 
preparation
Details of paint application
1st coat 2nd coat 3rd coat 4th coat 5th coat
Surface preparation grade 
achieved 
(ISO 8501-1, ISO 8501-2, 
ISO 8501-4)
 
Surface profile achieved 
(ISO 8503-2)
 
Brand name(s)/types of 
blast-cleaning abrasive (e.g. 
in accordance with ISO 11124 
series/ISO 11126 series of 
standards)
 
Manufacturer(s) of abrasive 
Date 
Air temperature °C 
Relative humidity % 
Dew point °C 
Surface temperature °C 
Designation of paint and type 
of coat, product no.
 
Colour 
Batch no. 
Paint manufacturer(s) 
Method of application 
NDFT μm 
DFT min. µm 
 mean µm 
 max. µm 
 Number of 
measure-
ments
 
Complies with specification? Yes/no Yes/no Yes/no Yes/no Yes/no
 
28 © ISO 2017 – All rights reserved
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ISO 12944-8:2017(E)
Reference areas provided?  Yes  No
Date of preparation
 
 
 
Remarks
 
 
Use additional sheet, if necessary.
 
 
Date:
 
 
Name of inspector:
Place:
 
 
Signature:
 
© ISO 2017 – All rights reserved 29--``,````,,,``````,``,,``,`,`,`-`-`,,`,,`,`,,`---
 
ISO 12944-8:2017(E)
Annex J 
(informative) 
 
Recommended form for a detailed inspection report on the 
condition of an existing protective paint system, including the 
assessment of the need for maintenance
A BASIC INFORMATION
A1 Name of project:
A2 Name of owner:
A3 Location of project/structure:
A4 In order of:
A5 Paint manufacturer(s):
A6 Corrosion protection work carried out by:
A7 Structure: Area: m2
A8 Constituent element: Area: m2
A9 Drawing no.: Position no.:
A10 Environmental conditions (see Annex E and ISO 12944-2):
A11 Durability range of protective paint system (see ISO 12944-1):
A12 Guarantee time: from: to:
B PROTECTIVE PAINT SYSTEM
B1 Surface preparation (see ISO 12944-4):
B2 Surface profile (roughness) (ISO 12944-4):
B3 Substrate and possible metal coating (e.g. hot-dip-galvanized or thermally sprayed metal):
B4 Prefabrication primer/batch no.:
B5 Priming coat/batch no.:
B6 Intermediate coat/batch no.:
B7 Top coat/batchno.:
B8 Period/end of application:
B9 Date(s) and description of repair work (if any):
 
30 © ISO 2017 – All rights reserved
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ISO 12944-8:2017(E)
B10 Dry film thickness (DFT) (see ISO 2808 and 
ISO 19840):
 
 
Date of measurement:
Measurement device used:
 
 
Spot/area: 
DFT min. µm 
 mean 
µm
 
 max. µm 
C ASSESSMENT OF CONDITION OF PROTECTIVE PAINT SYSTEM
 Type of 
defect
Structure/constituent 
element
Degree of 
degradation
Photo no./ 
computer 
photo no./ 
sketch no.
Estimated 
cause of de-
fect
Need for 
maintenance? 
(Yes/no)
C1 Degree of 
blistering 
ISO 4628-2
Designation: ....................
..........................................
Location: .........................
..........................................
Coat concerned: .............
..........................................
 Whole surface
 Spots
 
C2 Degree of 
rusting 
(Ri) 
ISO 4628-3
Designation: ....................
..........................................
Location: .........................
..........................................
Coat concerned: .............
..........................................
 Whole surface
 Spots
 
C3 Degree of 
cracking 
ISO 4628-4
Designation: ....................
..........................................
Location: .........................
..........................................
Coat concerned: .............
..........................................
 Whole surface
 Spots
 
 
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ISO 12944-8:2017(E)
C4 Degree of 
flaking 
ISO 4628-5
Designation: ....................
..........................................
Location: .........................
..........................................
Coat concerned: .............
..........................................
 Whole surface
 Spots
 
C5 Degree of 
chalking 
ISO 4628-6
Designation: ….................
….......................................
Location: …......................
….......................................
Coat concerned: …..........
….......................................
 Whole surface
 Spots
 
C6 Rusting of 
welds, etc.
Designation: ….................
….......................................
Location: …......................
….......................................
Coat concerned: …..........
….......................................
 Whole surface
 Spots
 
C7 Adhesion 
ISO 16276-1 
and/or 
ISO 16276-2
Designation: ….................
….......................................
Location: …......................
….......................................
Coat concerned: …..........
….......................................
 Whole surface
 Spots
 
C8 Filiform 
corrosion 
ISO 4628-10
Designation: ….................
….......................................
Location: …......................
….......................................
Coat concerned: …..........
….......................................
 Whole surface
 Spots
 
 
32 © ISO 2017 – All rights reserved
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ISO 12944-8:2017(E)
C9 Other 
defects
 
D MAINTENANCE
D1 Nature: a) Structure
b) Constituent element
c) Location of surface
 
D2 Estimated cause 
(cross as appropriate):
 a) Normal wear and tear
 b) Inadequate protective paint system
 c) Errors of workmanship
D3 Recommended measures 
(cross as appropriate):
 a) Maintenance painting unnecessary be-
fore next inspection (number of years.........)
 b) Maintenance painting required before 
next inspection (number of years.........)
 c) Maintenance painting required within 
1 year
 d) Maintenance painting required immedi-
ately (<4 months)
D4 Remarks
 
 
 
 
 
 
 
 
Date of inspection: Signature of inspector:
___________________________________ ________________________________
 
© ISO 2017 – All rights reserved 33
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ISO 12944-8:2017(E)
Bibliography
[1] ISO 2409, Paints and varnishes — Cross-cut test
[2] ISO 2808, Paints and varnishes — Determination of film thickness
[4] ISO 4624, Paints and varnishes — Pull-off test for adhesion
[5] ISO 4628-2, Paints  and  varnishes  —  Evaluation  of  degradation  of  coatings  —  Designation  of 
quantity and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment 
of degree of blistering
[6] ISO 4628-3, Paints  and  varnishes  —  Evaluation  of  degradation  of  coatings  —  Designation  of 
quantity and size of defects, and of intensity of uniform changes in appearance — Part 3: Assessment 
of degree of rusting
[7] ISO 4628-4, Paints  and  varnishes  —  Evaluation  of  degradation  of  coatings  —  Designation  of 
quantity and size of defects, and of intensity of uniform changes in appearance — Part 4: Assessment 
of degree of cracking
[8] ISO 4628-5, Paints  and  varnishes  —  Evaluation  of  degradation  of  coatings  —  Designation  of 
quantity and size of defects, and of intensity of uniform changes in appearance — Part 5: Assessment 
of degree of flaking
[9] ISO 4628-6, Paints  and  varnishes  —  Evaluation  of  degradation  of  coatings  —  Designation  of 
quantity and size of defects, and of intensity of uniform changes in appearance — Part 6: Assessment 
of degree of chalking by tape method
[3] ISO 4628-10, Paints  and  varnishes  —  Evaluation  of  degradation  of  coatings  —  Designation 
of  quantity  and  size  of  defects,  and  of  intensity  of  uniform  changes  in  appearance —  Part  10: 
Assessment of degree of filiform corrosion
[10] ISO 8501-1, Preparation of  steel  substrates  before  application  of  paints  and  related products — 
Visual assessment of surface cleanliness — Part 1: Rust grades and preparation grades of uncoated 
steel substrates and of steel substrates after overall removal of previous coating
[11] ISO 8501-2, Preparation of  steel  substrates before application of  paints and  related products — 
Visual assessment of  surface  cleanliness — Part 2: Preparation grades of previously  coated  steel 
substrates after localized removal of previous coatings
[12] ISO 8501-3, Preparation of  steel  substrates before application of  paints and  related products — 
Visual assessment of  surface  cleanliness — Part 3: Preparation grades of welds,  edges and other 
areas with surface imperfections
[16] ISO 8501-4, Preparation of  steel  substrates before application of paints and  related products — 
Visual assessment of surface cleanliness — Part 4: Initial surface conditions, preparation grades and 
flash rust grades in connection with high-pressure water jetting
[13] ISO 8502-3, Preparation of  steel  substrates before application of paints and  related products — 
Tests  for  the  assessment  of  surface  cleanliness —  Part  3:  Assessment  of  dust  on  steel  surfaces 
prepared for painting (pressure-sensitive tape method)
[14] ISO 8502-6, Preparation of  steel  substrates before application of paints and  related products — 
Tests  for  the  assessment  of  surface  cleanliness — Part  6:  Extraction  of  soluble  contaminants  for 
analysis — The Bresle method
[15] ISO 8502-9, Preparation of  steel  substrates before application of paints and  related products — 
Tests  for  the  assessment  of  surface  cleanliness —  Part  9:  Field  method  for  the  conductometric 
determination of water-soluble salts
 
34 © ISO 2017 – All rights reserved
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ISO 12944-8:2017(E)
[30] ISO 8503-1, Preparation of  steel  substrates before application of  paints and  related products — 
Surface  roughness  characteristics  of  blast-cleaned  steel  substrates —  Part  1:  Specificationsand 
definitions for ISO surface profile comparators for the assessment of abrasive blast-cleaned surfaces
[17] ISO 8503-2, Preparation of  steel  substrates before application of paints and  related products — 
Surface roughness characteristics of blast-cleaned steel substrates — Part 2: Method for the grading 
of surface profile of abrasive blast-cleaned steel — Comparator procedure
[18] ISO 8503-3, Preparation of  steel  substrates before application of paints and  related products — 
Surface  roughness  characteristics  of  blast-cleaned  steel  substrates  —  Part  3:  Method  for  the 
calibration  of  ISO  surface  profile  comparators  and  for  the  determination  of  surface  profile  — 
Focusing microscope procedure
[19] ISO 8503-4, Preparation of  steel  substrates before application of paints and related products — 
Surface  roughness  characteristics  of  blast-cleaned  steel  substrates  —  Part  4:  Method  for  the 
calibration of ISO surface profile comparators and for the determination of surface profile — Stylus 
instrument procedure
[20] ISO 11124 (all parts), Preparation  of  steel  substrates  before  application  of  paints  and  related 
products — Specifications for metallic blast-cleaning
[21] ISO 11126 (all parts), Preparation  of  steel  substrates  before  application  of  paints  and  related 
products — Specifications for non-metallic blast-cleaning abrasives
[22] ISO 12944-2, Paints and varnishes — Corrosion protection of steel structures by protective paint 
systems — Part 2: Classification of environments
[23] ISO 12944-3, Paints and varnishes — Corrosion protection of steel structures by protective paint 
systems — Part 3: Design considerations
[24] ISO 12944-4, Paints and varnishes — Corrosion protection of steel structures by protective paint 
systems — Part 4: Types of surface and surface preparation
[25] ISO 12944-5:—1), Paints and  varnishes — Corrosion protection of  steel  structures by protective 
paint systems — Part 5: Protective paint systems
[28] ISO 12944-6, Paints and varnishes — Corrosion protection of steel structures by protective paint 
systems — Part 6: Laboratory performance test methods
[26] ISO 12944-7:2017, Paints and varnishes — Corrosion protection of steel  structures by protective 
paint systems — Part 7: Execution and supervision of paint work
[29] ISO 12944-9, Paints and varnishes — Corrosion protection of steel structures by protective paint 
systems — Part 9: Protective paint systems and laboratory performance test methods for offshore 
and related structures
[31] ISO 16276-1, Corrosion protection of steel structures by protective paint systems — Assessment of, 
and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating — Part 1: Pull-
off testing
[32] ISO 16276-2, Corrosion protection of steel structures by protective paint systems — Assessment of, 
and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating — Part 2: Cross-
cut testing and X-cut testing
[27] ISO 19840, Paints  and  varnishes —  Corrosion  protection  of  steel  structures  by  protective  paint 
systems — Measurement of, and acceptance criteria for, the thickness of dry films on rough surfaces
[33] RAL 840-HR, Primary standards
[34] NF X 08-002, AFNOR colour fan
[35] BS 4800, Colour chart
 
© ISO 2017 – All rights reserved 35
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ISO 12944-8:2017(E)
[36] NS 4054, Colours for identification
[37] UNE 48103, Paints and varnishes — Standardized colours
 
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ISO 12944-8:2017(E)
 
© ISO 2017 – All rights reserved
ICS 87.020
Price based on 36 pages
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	Foreword
	Introduction
	1 Scope
	2 Normative references
	3 Terms and definitions
	4 How to develop a specification for new work or maintenance
	5 Contents of a specification
	5.1 Supply
	Annex€A (informative) Basic information for inclusion in a protective paint system specification for new work and maintenance
	Annex€B (informative) Reference areas
	Annex€C (informative) Flow chart for planning new work
	Annex€D (informative) Flow chart for planning maintenance work
	Annex E (informative) Classification of environments — Checklist (derived from ISO 12944‑2)
	Annex F (informative) Recommended form for a protective paint system specification — New work
	Annex G (informative) Recommended form for a protective paint system specification — Maintenance
	Annex€H (informative) Recommended form for a report on paint work progress and application conditions
	Annex€I (informative) Recommended form for final report on corrosion protection work
	Annex€J (informative) Recommended form for a detailed inspection report on the condition of an existing protective paint system, including the assessment of the need for maintenance
	Bibliography